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Fixed wrong mysql-test
New german error messages BitKeeper/deleted/.del-ATIS-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg~d002b0bc548ff8b3: Delete: sql-bench/Results/ATIS-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-RUN-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg~e938a858bd12aa8d: Delete: sql-bench/Results/RUN-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-alter-table-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg~14360865bbba479f: Delete: sql-bench/Results/alter-table-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-big-tables-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg~b6be70bb51013cad: Delete: sql-bench/Results/big-tables-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-connect-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg~1b715c6fd72e913e: Delete: sql-bench/Results/connect-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-create-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg~f3b1d326092bf44: Delete: sql-bench/Results/create-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-insert-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg~a0143553cccb54e2: Delete: sql-bench/Results/insert-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-select-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg~4ffc9cf4be665ea2: Delete: sql-bench/Results/select-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-wisconsin-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg~1ed1dc6abd24e7e3: Delete: sql-bench/Results/wisconsin-pg-Linux_2.4.0_64GB_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-ATIS-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~2ac8fe298953d43: Delete: sql-bench/Results/ATIS-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-ATIS-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~cf0d806760eefef2: Delete: sql-bench/Results/ATIS-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-ATIS-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~e625af7f600bf930: Delete: sql-bench/Results/ATIS-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-RUN-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~a88e954bc8de5460: Delete: sql-bench/Results/RUN-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-RUN-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~d922a0fcc1009130: Delete: sql-bench/Results/RUN-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-RUN-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~840503a555e420ec: Delete: sql-bench/Results/RUN-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-alter-table-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~ee94f987797ca948: Delete: sql-bench/Results/alter-table-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-alter-table-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~2f516d2c108a9e05: Delete: sql-bench/Results/alter-table-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-alter-table-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~6e532c1936df1737: Delete: sql-bench/Results/alter-table-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-big-tables-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~28b688e2cd4b6bb3: Delete: sql-bench/Results/big-tables-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-big-tables-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~6d8209bf72b663ed: Delete: sql-bench/Results/big-tables-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-big-tables-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~c87333d6fe04433e: Delete: sql-bench/Results/big-tables-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-connect-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~1cf5d5f0d70a3fa0: Delete: sql-bench/Results/connect-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-connect-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~7ed15d6fd1a5944c: Delete: sql-bench/Results/connect-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-connect-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~ab58fffa30dce97e: Delete: sql-bench/Results/connect-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-create-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~fc207468e871ff69: Delete: sql-bench/Results/create-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-create-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~241c337935ae1524: Delete: sql-bench/Results/create-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-create-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~4e5a2ab4907748d4: Delete: sql-bench/Results/create-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-insert-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~975e26cac59161fa: Delete: sql-bench/Results/insert-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-insert-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~27b7a557c3cb07a: Delete: sql-bench/Results/insert-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-insert-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~a85a6f0477c13f83: Delete: sql-bench/Results/insert-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-select-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~34a39fbcb58d8945: Delete: sql-bench/Results/select-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-select-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~8ef771713f89e1: Delete: sql-bench/Results/select-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-select-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~4f7795c27eaab86b: Delete: sql-bench/Results/select-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-wisconsin-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~8101a5823c17e58a: Delete: sql-bench/Results/wisconsin-mysql_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-wisconsin-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~6a468dcd3e6f5405: Delete: sql-bench/Results/wisconsin-pg-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg BitKeeper/deleted/.del-wisconsin-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg~24a02e007a58bf73: Delete: sql-bench/Results/wisconsin-pg_fast-Linux_2.2.14_my_SMP_i686-cmp-mysql,pg Docs/internals.texi: Added MySQL protocol Docs/manual.texi: Added links configure.in: Update to 39a mysql-test/t/check.test: Added missing drop table mysql-test/t/compare.test: Added missing drop table sql/share/german/errmsg.txt: Update
This commit is contained in:
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@ -47,7 +47,7 @@ This is a manual about @strong{MySQL} internals.
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@menu
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@end menu
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@node caching
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@node caching,,,
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@chapter How MySQL handles caching
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@strong{MySQL} has the following caches:
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@ -89,7 +89,7 @@ found rows are cached in a join cache. One SELECT query can use many
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join caches in the worst case.
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@end itemize
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@node flush tables
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@node flush tables,,,
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@chapter How MySQL handles flush tables
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@itemize @bullet
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@ -134,7 +134,7 @@ After this it will give other threads a chance to open the same tables.
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@end itemize
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@node Filesort
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@node Filesort,,,
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@chapter How MySQL does sorting (filesort)
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@itemize @bullet
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@ -174,7 +174,7 @@ and then we read the rows in the sorted order into a row buffer
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@end itemize
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@node Coding guidelines
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@node Coding guidelines,,,
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@chapter Coding guidelines
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@itemize @bullet
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@ -289,7 +289,7 @@ Use pointers rather than array indexing when operating on strings.
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@end itemize
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@node mysys functions
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@node mysys functions,,,
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@chapter mysys functions
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Functions i mysys: (For flags se my_sys.h)
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@ -433,6 +433,205 @@ Functions i mysys: (For flags se my_sys.h)
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void end_key_cache _A((void));
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- End key-cacheing.
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@node protocol,,,
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@chapter MySQL client/server protocol
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Raw packet without compression
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==============================
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-------------------------------------------------
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| Packet Length | Packet no | Data |
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| 3 Bytes | 1 Byte | n Bytes |
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-------------------------------------------------
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3 Byte packet length
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The length is calculated with int3store
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See include/global.h for details.
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The max packetsize can be 16 MB.
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1 Byte packet no
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If no compression is used the first 4 bytes of each paket
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is the header of the paket.
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The packet number is incremented for each sent packet. The first
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packet starts with 0
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n Byte data
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The packet length can be recalculated with:
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length = byte1 + (256 * byte2) + (256 * 256 * byte3)
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Raw packet with compression
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===========================
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-----------------------------------------------------
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| Packet Length | Packet no | Uncomp. Packet Length |
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| 3 Bytes | 1 Byte | 3 Bytes |
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-----------------------------------------------------
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3 Byte packet length
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The length is calculated with int3store
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See include/global.h for details.
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The max packetsize can be 16 MB.
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1 Byte packet no
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3 Byte uncompressed packet length
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If compression is used the first 7 bytes of each paket
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is the header of the paket.
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Basic packets
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==============
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OK-packet
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For details see sql/net_pkg.cc
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function send_ok
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-------------------------------------------------
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| Header | No of Rows | Affected Rows |
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| | 1 Byte | 1-8 Byte |
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-------------------------------------------------
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| ID (last_insert_id) | Status | Length |
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| 1-8 Byte | 2 Byte | 1-8 Byte |
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-------------------------------------------------
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| Messagetext |
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| n Byte |
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-------------------------------------------------
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Header
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1 byte number of rows ? (always 0 ?)
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1-8 bytes affected rows
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1-8 byte id (last_insert_id)
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2 byte Status (usually 0)
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If the OK-packege includes a message:
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1-8 bytes length of message
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n bytes messagetext
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Error-packet
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-------------------------------------------------
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| Header | Statuscode | Error no |
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| | 1 Byte | 2 Byte |
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-------------------------------------------------
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| Messagetext | 0x00 |
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| n Byte | 1 Byte |
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-------------------------------------------------
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Header
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1 byte status code (0xFF = ERROR)
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2 byte error number (is only sent to new 3.23 clients.
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n byte errortext
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1 byte 0x00
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The communication
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=================
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> Packet from server to client
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< Paket from client tor server
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Login
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------
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> 1. packet
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Header
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1 byte protocolversion
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n byte serverversion
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1 byte 0x00
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4 byte threadnumber
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8 byte crypt seed
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1 byte 0x00
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2 byte CLIENT_xxx options (see include/mysql_com.h
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that is supported by the server
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1 byte number of current server charset
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2 byte server status variables (SERVER_STATUS_xxx flags)
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13 byte 0x00 (not used yet).
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< 2. packet
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Header
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2 byte CLIENT_xxx options
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3 byte max_allowed_packet for the client
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n byte username
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1 byte 0x00
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8 byte crypted password
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1 byte 0x00
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n byte databasename
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1 byte 0x00
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> 3. packet
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OK-packet
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Command
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--------
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< 1. packet
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Header
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1 byte command type (e.g.0x03 = query)
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n byte query
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Result set (after command)
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--------------------------
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> 2. packet
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Header
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1-8 byte field_count (packed with net_store_length())
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If field_count == 0 (command):
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1-8 byte affected rows
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1-8 byte insert id
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2 bytes server_status (SERVER_STATUS_xx)
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If field_count == NULL_LENGTH (251)
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LOAD DATA LOCAL INFILE
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If field_count > 0 Result Set:
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> n packets
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Header Info
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Column description: 5 data object /column
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(See code in unpack_fields())
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Columninfo for each column:
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1 data block table_name
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1 byte length of block
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n byte data
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1 data block field_name
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1 byte length of block...
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n byte data
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1 data block display length of field
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1 byte length of block
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3 bytes display length of filed
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1 data block type field of type (enum_field_types)
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1 byte length of block
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1 bytexs field of type
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1 data block flags
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1 byte length of block
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2 byte flags for the columns (NOT_NULL_FLAG, ZEROFILL_FLAG....)
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1 byte decimals
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if table definition:
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1 data block default value
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Actual result (one packet per row):
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4 byte header
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1-8 byte length of data
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n data
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Fieldtype Codes:
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================
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display_length |enum_field_type |flags
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----------------------------------------------------
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Blob 03 FF FF 00 |01 FC |03 90 00 00
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Mediumblob 03 FF FF FF |01 FC |03 90 00 00
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Tinyblob 03 FF 00 00 |01 FC |03 90 00 00
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Text 03 FF FF 00 |01 FC |03 10 00 00
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Mediumtext 03 FF FF FF |01 FC |03 10 00 00
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Tinytext 03 FF 00 00 |01 FC |03 10 00 00
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Integer 03 0B 00 00 |01 03 |03 03 42 00
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Mediumint 03 09 00 00 |01 09 |03 00 00 00
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Smallint 03 06 00 00 |01 02 |03 00 00 00
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Tinyint 03 04 00 00 |01 01 |03 00 00 00
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Varchar 03 XX 00 00 |01 FD |03 00 00 00
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Enum 03 05 00 00 |01 FE |03 00 01 00
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Datetime 03 13 00 00 |01 0C |03 00 00 00
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Timestamp 03 0E 00 00 |01 07 |03 61 04 00
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Time 03 08 00 00 |01 0B |03 00 00 00
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Date 03 0A 00 00 |01 0A |03 00 00 00
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@c The Index was empty, and ugly, so I removed it. (jcole, Sep 7, 2000)
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